Home / 880,774.20-1,215,427.78-498,803.76

Finding the Fourth Proportional to 880,774.20, 1,215,427.78 and 498,803.76

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Solution

The fourth proportional to 880,774.20, 1,215,427.78 and 498,803.76 is: 688,326.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,774.20 : 1,215,427.78 = 498,803.76 : x
  2. Step 2: Convert to fraction form
    880,774.20/1,215,427.78 = 498,803.76/x
  3. Step 3: Cross multiply
    880,774.20x = 1,215,427.78 × 498,803.76
  4. Step 4: Simplify right side
    880,774.20x = 606,259,946,672.45
  5. Step 5: Solve for x
    x = 606,259,946,672.45/880,774.20
  6. Step 6: Final answer
    x = 688,326.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.